package com.zan.springcloud.service.impl;

import com.zan.springcloud.dao.OrderDao;
import com.zan.springcloud.domain.Order;
import com.zan.springcloud.service.AccountService;
import com.zan.springcloud.service.OrderService;
import com.zan.springcloud.service.StorageService;
import io.seata.spring.annotation.GlobalTransactional;
import lombok.extern.slf4j.Slf4j;
import org.springframework.stereotype.Service;

import javax.annotation.Resource;

/**
 * @Author Zan
 * @Create 2024/1/7 14:33
 * @Description :
 */
@Service
@Slf4j
public class OrderServiceImpl implements OrderService {

    @Resource
    private OrderDao orderDao;

    @Resource
    private StorageService storageService;

    @Resource
    private AccountService accountService;

    /**
     * 创建订单->调用库存服务扣减库存->调用账户服务扣减账户余额->修改订单状态
     * 简单说：下订单->减库存->减余额->改状态
     */
    @GlobalTransactional(name = "fsp-create-order", rollbackFor = Exception.class) // 发生任何异常都给我回滚
    @Override
    public void create(Order order) {
        log.info("----->开始新建订单业务");
        // 1.创建订单
        orderDao.create(order);

        // 2.扣减库存
        log.info("----->订单微服务开始调用库存，做扣减库存count");
        storageService.decrease(order.getProductId(), order.getCount());
        log.info("----->订单微服务开始调用库存，做扣减库存count结束");

        // 3.扣减余额
        log.info("----->订单微服务开始调用账户，做扣减余额money");
        accountService.decrease(order.getUserId(), order.getMoney());
        log.info("----->订单微服务开始调用账户，做扣减余额money结束");

        // 4.修改订单的状态, 从0->1, 1代表已经完成
        log.info("----->修改订单状态开始");
        orderDao.update(order.getUserId(), 0);
        log.info("----->修改订单状态结束");

        log.info("----->下订单结束了，O(∩_∩)O哈哈~");
    }
}
